package lily.ui.bookshelf;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
import android.graphics.drawable.Drawable;

public class ImageUtil {
	
	public static Bitmap zoomBitmap(Bitmap bitmap,int w,int h){
		int width=bitmap.getWidth();
		int height=bitmap.getHeight();
		Matrix matrix=new Matrix();
		float scaleWidth=((float)w/width);
		float scaleHeight=((float)h/height);
		matrix.postScale(scaleWidth, scaleHeight);
		Bitmap newbitmap=Bitmap.createBitmap(bitmap,0,0,width,height,matrix,true);
		return newbitmap;
	}
	
	public static Bitmap drawableToBitmap(Drawable drawable){
		int width=drawable.getIntrinsicWidth();
		int height=drawable.getIntrinsicHeight();
		
		Bitmap bitmap=Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888);
		
		Canvas canvas=new Canvas(bitmap);
		drawable.setBounds(0,0,width,height);
		drawable.draw(canvas);
		
		return bitmap;
	}
	
	public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,float roundPx){
		Bitmap output=Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Config.ARGB_8888);
		Canvas canvas=new Canvas(output);
		
		final int color=0xff424242;
		final Paint paint=new Paint();
		final Rect rect=new Rect(0,0,bitmap.getWidth(),bitmap.getHeight());
		final RectF rectF=new RectF(rect);
		
		paint.setAntiAlias(true);
		canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG));
		canvas.drawARGB(0, 0, 0, 0);
		paint.setColor(color);
		canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
		
	
		
		paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
		canvas.drawBitmap(bitmap, rect,rect, paint);
		
		return output;
	}

}
